//app.js
App({
     onLaunch: function () {
     },
    // 获取用户信息
     getUserInfo: function (cb) {
          var that = this
          if (this.globalData.userInfo) {
               typeof cb == "function" && cb(this.globalData.userInfo)
          } else {
               wx.login({
                    success: function () {
                         wx.getUserInfo({
                              success: function (res) {
                                   that.globalData.userInfo = res.userInfo
                                   typeof cb == "function" && cb(that.globalData.userInfo)
                              }
                         })
                    }
               })
          }
     },
     globalData: {
          userInfo: null,
          movieInf:null
     }
})